the concern is as there are continued budget fights, the $8 billion or so they hope to spend on nexgen could get frittered away. the problem with something as complicated as nexgen is the lanes have to have new equipment on them so that they can -- planes have to have new equipment so that they can navigate by gps rather than radar. they have to have data communication systems to talk to the towers in the cities where they are going to land. they also have to develop new flight paths. right now, they tend to land in a stare step pattern. under nexgen, they will glide in smoother with a shorter horse, and that will save fuel, and -- shorter course, and that will save fuel. that is the incentive. some of this is in place, as in seattle. if you do not adopt the equipment and changing the fight plans, the sort of stuff the faa has to do for its $1 billion a year, maybe the airlines would not buy the equipment for the airplanes to upgrade, as they would need to do to cooperate. as it slows down, the slowdown could snowball. this is something the faa is behind. the airlines want to do this t

the problem with something as complicated as nexgen is the lanes have to have new equipment on them sot they can -- planes have to have new equipment so that they can navigate by gps rather than radar. they have to have data communication systems to talk to the towers in the cities where they are going to land. they also have to develop new flight paths. right now, they tend to land in a stare step pattern. under nexgen, they will glide in smoother with a shorter horse, and that will save fuel, and -- shorter course, and that will save fuel. that is the incentive. some of this is in place, as in seattle. if you do not adopt the equipment and changing the fight plans, the sort of stuff the faa has to do for its $1 billion a year, maybe the airlines would not buy the equipment for the airplanes to upgrade, as they would need to do to cooperate. as it slows down, the slowdown could snowball. this is something the faa is behind. the airlines want to do this to save fuel, which is one-third of their costs, so the question is if congress races as highly as the industry does -- rates this as